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Environmental Engineering

Environmental Engineering
The design discharge for the combined sewer system shall be taken as

Rainfall + 6 DWF
Rainfall + 2 DWF
Equal to rainfall
Rainfall + DWF

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Environmental Engineering
The settling velocity of a particle in a sedimentation tank depends on

Surface area of tank
Both depth and surface area of tank
Depth of tank
None of these

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Environmental Engineering
The water carriage system of collection of waste product

Creates hygienic problem
All of these
Requires treatment before disposal
Is cheaper in initial cost than dry conservancy system

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Environmental Engineering
Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the

Turbidity in water
Hardness in water
Residual chlorine in water
Dissolved oxygen in water

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Environmental Engineering
Laying of sewers is usually done with the help of

A plane table
Sight rails and boning rods
A Theodolite
A compass

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Environmental Engineering
Facultative bacteria are able to work in

Absence of oxygen only
Presence as well as in absence of oxygen
Presence of oxygen only
Presence of water

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